Gauging instrument



De@ 5, 1944- E. F. AHLsTRoM GAUGING `INSTRUMENT- Filed sept. 24, 19,42

2 Sheets-Sheet 1 Y mvENToR Bnwyn FPU-Immun.

Q7 ATTORNEYS E. F. AHLSTROM GAUGING INSTRUMENT Dec. 5, 1944.

Filed Sept. 24, 1942 l 2 Sheets-Sheet 2 INVENTQR 77 EnwAllgaYn E AHLSTRUM. l uw lEYS l;

ATTORN `gaged` by the blocks, t

,nnally pointediout in the claims,

Patented Dee. s, 1944 PATENT' OFFICE. y

,n n ldauernde INSTRUMENT t i 1 n n "l Edward Ennis-trom, Kansas oitygMol, assigner@ Remington Arms Company, `Inc.", Bridgeport, fConn.,a corporation of Delaware j l `The present` invention relates Vto a gauge device, particularly a` vertical profile gauge for making a succession `of lvertically spaced diameter `:measurements of `a Work-piece, wherein it is ofextrerne importance` that :the vertilsaLspac-` ing of the measuring points may belvery accu- \,rately predetermined `and controlled, t and `Where-` in the diameter` measurements i must be made with the utmost` precision. The, gauge is espe-v cially `adapted for themeasuringofsuch Work--` pieces as a tapered or gpointedi toolyas for instance a bullet pointinggpunch which must be ground to a very accurate profilerandwherein 1 the diameter measurements must be `made at vertically sp apart. ,i 1 -It is an obje aced points zas small as` ,0005i inch .i

ct of ,the Vinvention to provide a gauge of very sturdy constructionso that itis f adapted `for convenientqtuse bypworkmen in the factory, and `,wherein the precise i`1t.andoperar tionpof` the movableparts willi-be maintained,- "under such conditions.` f i Another-:object is to provide aigauge including-work-piece caliperingblocks adapted to be engaged at :opposed sides-ofthe work-piece, and

which `blocks n are `:adapted to` be engaged by a micrometer to conveniently determine the diameter 1 of the section of` the work-piece `eni Another object is to providea device in which Avarious sizes and lengths7 of Work-pieces may be showing a Abullet pointing punch secured thereto.

`along the line. l--Slof Fig. 5.` A Eig.- 'i` isa horizontalsection view,'taken along the line,`.'l-`1gofFig.`5, and" showingl themi- ,crometer ,engaged ,n with the, calipering blocks'. 'g.i8` is a detail" plan viewof uthe base memher" of the`device.

, Fig. 9 is a" ing blocks. i i n t t `Similar reference characters indicate corresponding parts throughout `the several partslof the drawings. t l l n,

,Referring toA theidrawings, the gauge device, `according to the illustrated exemplaryembodiment ofitheinvention shown therein, comprises a rectangularfhasemember10,' supported in `raisedrelation` upon `three,outwardly ,inclined other two at the rearward corners of `the base.

4On, the lupperrside of4 thebase member there is Qformed a platform. i3, having its longitudinal .side walls lli-,Illrundercut and bevelled to provide n a t dove-tail slide-Way for the f slidably mounted calipering` block-carrying member,

hereinafter` more l fully t referred to. K The `upper surface of 1 theplatfcrm is provided with a rel cessedl clearance gchannel I5 extending longimeasured, and wherein adjustment (means is -iprovided for accommodating such` various sizes so that the caliperingwblocks may becentrally engaged with the work at diametrically oppo-` site points irrespective of whether the `body of j the Work-piece,` is of relatively, small orrela- `In the drawings: t ,n y Y t Fig. `1 isa `front elevationgofl algauge device, `according to theillustrated; `exemplary embodiment of the invention.` l i Fig.` 2fis aside elevation. n Fig. 8is a top-plan view.

HFig. 4 ,is a reanelevatiomof the lower end portion of thegaugev device, showing the; base `and lower end ,ofA the :vertical standard supportedthereon."` i A Fig. 5 insa vertical" sectional-,viewofthe1de- Y55 n tudinallywithtitsside wallsin parallel spaced relationnto the side edges of -theplatiorm At the forwardend ofthe base, there is provided a stop screwi`pl6rarranged centrally and having its head projected abovethe upper" surface ofV the base to provide a` removable Aforwardrstop to .limit the forwardslidingmovement ofythe calipering block-carrying member.

-l A cylindrical vertically extendingv hole` |77 is provided `in the `basernemberjfor the purpose A ofreceiving the lower endof` the work-piece as the latter is moved downwardly during` the Agauging opera tion,thisiholebeing of sufficiently nal center line ofthe base` there is` provideda `cylindrical socket I8, constituting a `bearing sup- -port forthelower endiof thevertical adjustf` i `ment micrometer 1screw ofthe device, hereinn after` more fully referred 4to; The rearward wall of the platform is cylindrically'shaped, as at 19,

forwardly spaced concentric relation to the 'wall perspective view ofthe two caliperin concentric relation tothesocket I8, and in"` lit the clearancerecess I5, as shown clearly fin V1 Fig. 4. The standard is securely xedtothe base by means of bolts 24 engaged in^theb`olt holes 20 and` screwed into :threaded holes --25.in thelower end of the standardfandfis accurately positioned upon the base by means of dowelsEZG ycal adjustment equal to 1/50 of the pitch of the micrometer screw. Thus, for instance, if this pitch is .025 inch, each division will represent an adjustment of .0005 inch.

The work holder comprises a V-block 49 provided in its forward face with a vertically disposed V-shaped recess 5 0 for receiving the workpieceiand, provided at,-itsrearwardfside with a 'bearing portioni'l slidablyirengagedbetween the vertical slideway bars 29,V the rearwardly dis.-

posed vertical surfaces of the block at each side of this bearing portion having sliding engagement i Ywith'theforward surfaces of the bars 29 and beengaged in the dowel holes.2,I ,of the-base and. in A l dowel holes 2Ia in the lower end ofithestandar'd.

At each side of the lower end of the 'standard g rthereare,providedut-Quts 21, the vertical walls Of which are parallel *to "the 1lcnrgitudinal Aside ,edges of the slide-iway platform scr/that clearance spaces are providedatlthesrearpf 4the calipering block-carrying lmemberat'eah sideenabling it v:topbe dconveniently;'grippe'dbythe lfingers forthe purposeofY adjusting `it .forwardlyan'drearwardly. The 'forwardly disposed 'iin-ner 'corners 4of the stan'da/rd are kprovided with verticallyextending right angle recesses 282.8 in whichsa pair o'f :'Uponthe .'upperA end 'ofthe standard vv-2'2 there is 4providedy 1a cap pl'ate"'member 3I rigidly V"secured 'by 'screws 32, :"andfaccuratelypositioned lby dowelsx, and provided :infvertically:aligned :relation withtlire, I,bearing Socket V|18 "of the *base fing-fpreferably yvertically grooved, as at 52. The

portion 5|.5lsfcut/.out intermediate its ends, as at f53,nthevupper.end'jportion being provided with a threadedN passage 54 engaged by the micrometer 'screw"3I, andtheflower end portion being providediwith a cylindrical passage 55 through which the micrometer screw has free engagement. A "retaining plate '56* :is fsecuredfbylscrews5'lto the vrearward side of thebearingportions"5L-and Iis'--providedfwithforwardly projecting sideffiange `portions58---158 Ihaving bearing-'engagement `with "the Yrearward surfaces Qfft-hebar`sf29. VIInfcirderfto 'lfightenftlieeweight f'the' V-blockf'tvmay prefer- "ably' have 'pockets-IES'drilled therinffrom itslower :surface :to v4'a point rnear "its upper f surface, thus -providingtaiv#block Acif'relatively -large Isize arid mig-id' structure, 'and :which is 51at tl'iexsame ftime "of sufficiently u lightweight that ".fme'adjustrnent may ':be delicately zcarriedyout tbyf turning of 'the 'rniicrometerfscrew.` l'

'l The iWork-piece is fsecured-inithe 1V -iblockby fm'eansl'lof a frclamping screw '-l60, :carried in 1a V'U- shaped yoke member 6I `supported upon the 1V- .block, Jthis fyoke l'being fprovided 'ffupon the inner sfsidesf 0f' itsside arms with vertically-"disposed ribs 262 engaged jin *vertically .disposed r grooves T63 in with a bearing'hole 34,^providedat'-itsupperenii '40 -theisidefsurfacesfoffthezV-Lblock,Xtending'dOWn- "with an ann1'1lar shouldered bearing 'recess -"35 and an. 'annular 'shouldered jretaining-plate-'re- ,ceiving recess "36, for "the-jpurpose lofprovi'din'g '.bearing andA retaining means fforI the micrometer screw. .The micrometer :screw-'3'I'is o'f a diameter less than "the diameter "of the bearing 'hole j34/so that ,it may be 'assembled downwardly thereto, .and at ,its lower end*l is provided with` a reduced;l diameter-bearing'=stem-38 engaged inf the bearing socket I8 ofthe base member. I At the .upper end of the Vscrew there is provided a :cylin- .jdrical bearing 'portion 39 having bearing engagement ,inthe fhole r:34, 'an #annular flange Apor- ,tio'n 40, having bearing-engagement in the flannular 'recess 35; andA a lreducedl diameter-upwardly (projecting Istem portion r4I engage'dthrough 1a centrally aperturedretaining*plate 42 securedin -'the'annular V4recess 36 *by 'means of screws 43. An .oil hole 44" (Fig. 13') ,f-exten'dsfrom theexposed 'rim portionroff'thefeap 4plate'suri'ouridir'ig'the rey'cess 35 to"the'lrecess"35,'for the-purpose of 'con- "venient V'lubrication of `th'eupper vbearing of the Amicrometer screw. l f

, Upontheupperprojectingastem fportionL-.l'l 4df the micrometer screwf-valturning'fknobi is Aengaged land Lrig'idly T'secured '-by a 1set-'screw '46. "Thelowerfperipheral surf-ace of thai-knob, adjacent theuimy portion'ofithe cap plate surrounding 'the recess "36; is `provided#with calibrations 47, indicating vfractional turning Aof :the screw, these "calibrations Icocperatirig with an index mark 4,8-uporrtherim. Forxins'tance, i'fifthe calibrations Arepresent 50 r4divisions,asishown inthe-'illustrated I embodiment,-each1calibration indicates fl/o --of ta y"singleturner-the screwfthus in'clicating'a verti- "75 "retainediagainstflongitudinal ldisplacement 'and lwardly I from -the .npperIside-iand terminating' in spaced relation to the lower=side,fsojthat' th'elyke 4vmay *be rreadily engaged and disengaged :and in @its engaged: positionv is ldisposed centrally fof `.the

lycentral lateral planefofrthe All-block. ,'I'hework piece iszsecured by engaging Aitin the V-recess 50, zwhere it :engages falong two contact"lines, land lfirmly, pressing itfinto theV-block by tightening the clamping screw IILif'thisitig'hteningacation` drawing '.theribs 262 "forwardly against 'the Vfor-,ward twa'lls, of 'the grooves 63. It will be `besenved-fthat `fthe 'aV 4block fand the clamping yoke `fand screwsare :such'ithatccylindrical vwork-pieces -io'ffany lsize within zthe .limits fof :the `Adevice may befsecured i s t y Upon the 'dovetail slide-'way platform portion Neef 'thebase member .there is slidably `mounted for forward and rearward f'niovemen't =a yslide 'block64 'havingadovetail slot 55m its underside, ithisbIockv being'of rectangular form and its'width fdimension' b eingp-referably thesameas the width l`"dimension 'of the base |10, while its "longitudinal i'front to rearfdimension is substantially less than the distance between the forward face dfthe standard 22 and the stop screw'l'fsoyas tov perjmit of forward andrearwardf'sliding adjustment movement to accommodate the gauge 4`to i different diameters of work-pieces, will presently more fully appear. One -undercutiside wall of Athe groove 65 engagesdirectly-with the underfcut 's'idewall I4-of the'dovetail slide-way lplatiform I3, while 1a. gib strip vI'Ii' is interposed'be- 'Y tweenithe otherf undercut `side 'Wall andit'he other side wall I4 of the platform, this'gibestrip'being of the jaw by the finger, and

- eter measurement being laterally adjustable by means of a series of pins 61 screwed in the ing at their inner ends into pockets 68 provided in the outer surface of the gib strip. `For the purpose of lubricating the slide block the under,` i

cut sidewall of the groove 65 which directly enf gages the side wall of the platform I3 slide block and projectl is provided.

` determined points by lowering the work-piece a with oil grooves G9 to which oil is supplied by an inclined duct 10 extending to the outer side wall of the slide block, and the `inner bearing surface of the gib strip 6,6 is provided with oil grooves 1l to which oil is supplied by an inclined duct 12 extending to thel other side wall slide block there is provided a vertically extend-Q ing cylindrical n hole 13, normally in axial line with the axis ofthe work in the gauge, and which in any position of adjustment of the slide blol is in register with the larger diameter hole I1 of the base` I0, `so that the lower` end of the work-A piece may extend downwardly through the holes 13 and l1 and below .the raised bottom surface of the base IU in the space provided by the base supporting legs Il. ,e s .if

Transversely at each side of the hole 13, and in diametric alignment therewith, the ,slider block is provided with dovetail slide-.way grooves 14 in which a pair of opposed work salipering jaw members 15-15 are respectively engaged .`f0,r transverse sliding movement toward and away from `each other,`these jaw members each in cluding a dovetail` slide base 16 for engagement with the dovetail groove 14 having a 4clearance.' groove 11 in its underside, a concavely curved linger engaging rib 18 at its upper side having a knurled surface for `convenient manipulation a work-piece engaging calipering portion 19 at its inner end in the `form of arectangular block projecting upwardly and slightly inwardly. i The upper horizontal at surface of the block portion 1!!` forms with the inner at vertical surface a sharp edge which constitutes the work-pieceengaging portion v"of the calipering jaw, and the `outer flat vertical surface parallel to and outwardly spaced from the inner vertical at surface constitutes a micrometer engaging surface for determining the diamof the work. The adjusted positions of the calipering jaws may be xed by means of` set screws 8ll-llll,l respectively provided near each end of the `rearward side of the Vslide member. i

of the slide block. Along the longitudinal center line of ther predetermined amount for each measurement through turning the 4micrometer screw by means of the knob 45. Each 'single turn of the knob represents a predetermined vertical may be determined by the calibrations of s the knob. i

The calipering jaw members are positioned by moving the slide member upon the base sothat the calipering jaws are in substantially central alignment `with the work-piece, it being pointed out that witha relatively small diameter works` piece, such as shown, the slide member is moved rearwardly while a larger diameter work-piece will have the slide moved forwardly. `In anyposition of adjustment, the hole 14 of the slide member is within the outline ofthe larger di` ameter hole l1 of the base, and is of sucfie t size to allow the work-piece to be moved downwardly therethrough as the gauging operation pro gresses. To determine the diameter reading the calipering jaws are manuali engagement with the work-piece and their pos-` sitions are xed by `tightening the set screws 8D. The micrometer caliper is `thereupon engaged with the outer vertical surface of the calipering jaws and the diameter reading is determinedby subtracting the` predetermined dimension of these jaws, as `for instance one inch,` from the micrometerreading. x y s i 'Ihe form of the invention illustrated in the drawings and described herein is typical and illustrative only, and it is evident that the infven tion is capable of` embodiments in other forms, all falling Within the` scope of the appended claims, which are to be broadly construed. What is claimed is: i l l l.` Ina gauge device, a supporthaving an opening therethrough and slideways diametrically opposed at each side of said opening, a pair of Workpiece engaging calipering members both movably mounted in said slideways including means arand means adapted to be engaged `by `a calijpering s measuring device to determine the dimension of As shown clearly in Fig. 7, a micrometer caliper 8|, of the usual oke form, has its iixed` anvil e 82 engaged with the outer vertical face ofthe calipering jaw at one side of the workfpiece, while its movable spindle element 83 is engaged with the outer vertical surface of the calipering jaw at the'otherside. The dimension between the inner and outer vertical surfaces of the block e portion 19 is precisely predetermined, as fr instance .500 inch, so that the combined dimensions of the two jaws represents one-inch, and in determining the diameter of the work-piece from the micrometer reading the jaw dimension, or one inch, vis subtracted from` the micrometer reading. s s i Q In the operation of the device,` the work-piece 84, which is illustrated as a tapered bullet-formn ing punch, is secured inthe V-block 49 through tightening the clamping screw 6D, theinitial vertical position o-f` adjustment `being"conveniently determined by resting the lower pointedY end; of the punch upon the upperat surface of the the engaged workpiece, one of said calipering members being located at each side of said opening. fl 1 l 2. In a gauge device, a support, a `work-piece holder movably mounted on said` support `for rectilinear movement, a micrometer screw car-` ried by said support engaging-said,work-piece holder to `impart rectilinear movement thereto,

e acalibrated turning knob for saidscrew, a pair s of work-piece engaging calipering members mov-` n ably mounted on said supporti for movement in a` plane at right angles to the direction of move-` ment of said ,work holder including means l, ar-

` ranged to engage opposed sides of the Work-piece Ato carried by said work holder and means adapted to be engaged by a caliperingmeasuring device to determine the dimensionof the engagedwork piece.

3. In a gauge device, `a support, a work-piece holder movably mounted on said support for rectilinear movement, `aslide member movably mounted on said support` for rectilinear Inove-` ment in' a plane at right angles to the direction block portion of one of the calipering jaw memaxial adjust-` ment movement, and fractions of this movement y moved into firm` ci .movement:offsaid :work-piecexzholder, a ,pair ofworkepieceiengagingfcaliperingfmembers :movably mounted fon :said .slide member for movement .at-,rightiangles to thedirection of movement-.offsaidfslde member :and in a yplane at right angles to the .direction rof. movement Vof said AWork-piece holder .including ,means arranged to engage opposed sides :of fthe Work-piece carriedb'y -said WorK-piece-:ho'lder and means adapted to be engaged by a caliperingj measuring device 13o-determine the z dimension `'of -ztheI engaged workpiece. 1

4. vIn agaugedevice, a support, a` work-piece holder movably mounted on said support-for rectilinear movement .including a `iiXed Workpfiece receiving apart adapted to .receive `diierent diameter. work-pieces .-and .adjustable clamping means .for securing the vvvor-k-piece-a slide .membermovablymounted on said supportfor rectilinear movement in ra plane at :right angles `to thedirection of. movement. of said. Work holderto adjustsaid slide membervvith respect to different diameter Work-pieces, a pair of Work- `piece .engaging calipering. .members movably mountedon .said .slide member for movement at rightangles to the direction ofy movement. of said slide memberandin .a plane at,.right angles to the'direction- .of movement of said work-.piece 4holder .including means arranged to'engage .op-

posed. sides of the work-piece -carried by said work-pieceholder and means adapted to be engaged by a calipering measuring device vto determine the .dimension of the engaged workpiece. I n

"5. In'ajgaugedevice, aisupport including a base part `-and Aaifstandard part perpendicular to said basepart and 'each including guide-Way means, a Work-,piece holder 4movably mounted ,on said guide-Way ,means of said standard `part for rectilinear movement including a fixed work-piece receiving part adapted to receive differentdiameter 4Work-pieces and adjustable clamping means for'se'curing the Work-piecega slide member movaerienne slide ,member .for movement at V right angles `to the `direction of. movement of -saidf1workpiece holder including kmeans arranged to X engage opposed sides of the Work-,piece ,carried .byfsaid work-piece holder vand means 1 adapted' .to be fengaged by a calipering-measuring device to determine the dimension of the engaged Work-piece, y .7; Ina gaugedevice. a-isupport including. a base part and a `standard part perpendicularto jsaid base part and each .including guide-Way means, a Work-piece holder movably mountedonsaid guide-waymeansof said'standard part rior ret-A tilinear movement includinga xedwork-piece receiving part adapted I eter work-pieces andadjustable clamping means for-securing the work-piece, a.` slide. member .hav-

ing, a Work-piece reoeivingopemng and movably mounted .on Vsaid guide-Way Amean'siof .said .base

" said opening for movement at right Aanglesto the ably mounted on vsaid guide-Way-means .of said base part for rectilinear movementr in a plane at rightangles to the direction of movement of said Work-piece holder to adjust said slide member with respect to different diameter Work-pieces, a pair of work-piece engaging calipering members movably mounted on said slide member'for movement at right angles 'to the direction of movement of said slide member and in a plane at right angles to the direction of movement of said Work-piece holder including means arranged to engage opposed sides of the Wo-rk-piece carried by said Work-piece holder and means adapted to be engaged by a calipering measuring device to determine the dimension of the engaged workpiece.

' 6'. In a lgauge device, a support including a base part yand astandardpart perpendicular to said base part and each including guide-way means, a Work-piece holder movably mounted on said i guide-Way kmeans of said standard lpart lfor rectilinear movement including a V-recess lpart adapted to receive different diameter Work-pieces andan adjustable clamping screw 'opposed .tosaid V-recess part for securing the Work-piece, a slide member movably mounted on said guide-Way means of said base part for rectilinear movement in a plane at .right angles to the direction of movement of said Work-,piece holder` to adjust said slide member with respect to diierent diameter Work-pieces, a pair of Work-piece engaging e calipering membersmovably mounted on `said part for rectilinear. movementin a .plane yat rig-ht angles to the direction of movementof said Work-.- piece holder to adjust said opening vof .said .slide member to align it lwith respect to different. diamy eter Work-pieces, apair of work-piece engaging calipering members movably mounted `on said slide member atdiainetrically .opposed ysides'of means of said standard part for rectilinear movement-including a'flxed Work-,piece receiving part adapted'to receive different diameter work-pieces and adjustable `clamping means for securing the work-piecea slide memberhaving-a Work-piece receiving lopening in yregister with said'opening of said `'base fpart and ymovably mounted on said- .guide-Way'means of said'base part for rectilinear movement in a planeet right angles tothe direction of movementl of said Work-piece holder to adjust saidopening of said `slide memberfto align it with respect to ldiierent diameter v/'orkpieces, a pairfof Work-,pieceengaging calipering members movably mounted 'on said slide .member at diametrically opposed sideszzof said slide-member opening'formovementiat `right anglesto the direction of movementiof `said slide-:member and in a-plane at .right angles to the .directionof movement of said `Work-.piece holder including means arranged to engageopposed-sides of "the work-piece earriedbyvsaid work-piece holder and means .adapted to-.be engaged byxafjcalipering measuring deviceto determine-.the dimension'of the .engaged Work-piece. n v Y `9. In a gaugev device, asupport includinga-base part and a standardpart `,perpendicular .tosaid base part. and each .including guide-.Way .means, a Work-piece Yholder"movably.mountedjon said.

guide-Way means of said standard part forrectilinear movementvincluding a xed Worl +piece receiving .part adapted to. receive differenty diam-t eter Work-pieces andfadjustable clamping Ameans for ,Securing the Work-piece, `a .micrometer .screw carried by said standard part engaging said holder to .impart `.rectilinear .movement .thereto, a'slide member movablymounted on saidguider- ,to receive. different diam- 2,364,182 way means of saidbase part for rectilinear movement in a plane at right angles to the direction of movement of said work-piece holder to adjust said slide member with respect to different diameter work-pieces, a pair of Work-piece engaging calipering members movably mounted on said slide member for movement at right angles to the direction of movement of said slide member and y in a plane at right angles to the direction of movement of said `work-piece holder including` means arranged to engageopposed sides of the` work-piece carried by said work-piece holder and means adapted to be engaged by a calipering measuringdevice to `determine the dimension of the engagedWork-piece.` i i 10. In a gauge device, a support, a movable Work-piece holder carried by said support, indexing means carried bysaid support to predeterminedlymove said holder relative to said support, adjustable means carried by said holder to` clamp a piece of work thereto in predetermined relationship to said indexing means, and a pair i a calipering measuring device to determine the dimension of the engaged Work-piece. t i

1`1.1In a gauge device, a support, a movable work-piece holder carried by said support, a pair i of Work-piece engaging calipering members movably mountedon said support for freely sliding movement transverse to the direction of movement of said Work holder including means arranged to engage opposed sides ofthe workpiece bers. i

andmeans adapted to be engaged by a calipering measuring device to determine the dimension of the engaged work-piece, and means carried by y said holder to secure a piece of work thereon in predetermined relation to saidcalipering mem- EDWARD AHLsTRoM. 

